diff options
Diffstat (limited to 'drivers/usb/core/buffer.c')
| -rw-r--r-- | drivers/usb/core/buffer.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/usb/core/buffer.c b/drivers/usb/core/buffer.c index f641342cdec0..d2064ad7ad14 100644 --- a/drivers/usb/core/buffer.c +++ b/drivers/usb/core/buffer.c @@ -16,6 +16,7 @@ #include <linux/io.h> #include <linux/dma-mapping.h> #include <linux/dmapool.h> +#include <linux/genalloc.h> #include <linux/usb.h> #include <linux/usb/hcd.h> @@ -124,6 +125,9 @@ void *hcd_buffer_alloc( if (size == 0) return NULL; + if (hcd->localmem_pool) + return gen_pool_dma_alloc(hcd->localmem_pool, size, dma); + /* some USB hosts just use PIO */ if (!IS_ENABLED(CONFIG_HAS_DMA) || (!is_device_dma_capable(bus->sysdev) && @@ -152,6 +156,11 @@ void hcd_buffer_free( if (!addr) return; + if (hcd->localmem_pool) { + gen_pool_free(hcd->localmem_pool, (unsigned long)addr, size); + return; + } + if (!IS_ENABLED(CONFIG_HAS_DMA) || (!is_device_dma_capable(bus->sysdev) && !(hcd->driver->flags & HCD_LOCAL_MEM))) { |